Available Answers

1. 1.

   What happens to the end products formed during photosynthesis?

2. 2.

   Write true or false. Correct the false statements.

   1. Green plants make their own food by the process of respiration.
   2. The glucose produced during photosynthesis is transported from the leaves of other parts of the plant.
   3. Carbon dioxide is released as an end product during photosynthesis.
   4. Stomata are present mostly on the upper surface of leaves and on green stems.
   5. The rate of photosynthesis increases with an increase in the concentration of carbon dioxide.
3. 3.

   Prepare a chart on significance of photosynthesis.

4. 4.

   Tick the most appropriate answer.

   1. Plants make their own food by a process called
      1. respiration.
      2. symbiosis.
      3. nutrition.
      4. photosynthesis.
   2. During the process of photosynthesis, plants use energy from the 
      1. water.
      2. sun.
      3. oxygen.
      4. glucose.
   3. The green pigment present in leaves is called
      1. chlorophyll.
      2. chloroplast.
      3. chromoplast.
      4. anthocyanin.
   4. Small pores on the lower surface of leaves are called
      1. stomata.
      2. thylakoid.
      3. chloroplast.
      4. chlorophyll.
   5. Each stoma has two bean-shaped celled
      1. palisade.
      2. guard cells.
      3. epidermis.
      4. chloroplast.
   6. When the guard cells lose water, they lose their turgidity and the stomata
      1. open.
      2. close.
      3. remains same.
      4. disappears.
   7. If the colour of a leaf changes to blue-black when a few drops of iodine are added to it, then it shows the presence of
      1. starch.
      2. glucose.
      3. protein.
      4. vitamins.
   8. The optimum temperature at which the photosynthesis occurs best is aaround
      1. 30ºC
      2. 65ºC
      3. 100ºC
      4. 45ºC
5. 5.

   Fill in the blanks.

   1. All organisms need __________________ to live and grow.
   2. Animals get their food from __________________ and other animals.
   3. The __________________ produced during photosynthesis is transported from the leaves to the other parts of the plant.
   4. The inner walls of the guard cells are __________________ than the outer walls.
   5. __________________ absorbs light.
   6. The ratee of photosynthesis __________________ with an increase in the concentration of carbon dioxide.
6. 6.

   Where do living organisms obtain energy from?